KR20120111256A - Corona discharge-resistant insulating varnish composition comprising surface-treated silica and insulated wire containing insulated layer coated with the same - Google Patents
Corona discharge-resistant insulating varnish composition comprising surface-treated silica and insulated wire containing insulated layer coated with the same Download PDFInfo
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- C—CHEMISTRY; METALLURGY
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- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D179/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen, with or without oxygen, or carbon only, not provided for in groups C09D161/00 - C09D177/00
- C09D179/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C09D179/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/303—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups H01B3/38 or H01B3/302
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- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/303—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups H01B3/38 or H01B3/302
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Abstract
Description
본 발명은 내 코로나 방전성(corona discharge-resistant) 절연 도료 조성물 및 이를 도포하여 형성된 절연 피막을 포함하는 절연 전선에 관한 것이다.The present invention relates to an insulated wire comprising a corona discharge-resistant insulating coating composition and an insulating coating formed by applying the same.
코로나 방전(corona discharge)은 절연 전선, 절연 케이블 등의 절연체 중에 생긴 미세한 틈에 전계가 집중되고 미약한 방전이 발생하는 것을 의미한다. 이러한 코로나 방전이 발생하면 절연 특성이 떨어지고 열화가 진행되어 절연 파괴가 발생할 수 있다. 특히 모터 등에 사용되는 코일(또는 트랜스포머), 구체적으로 절연 도료를 도체상에 도포하고 경화하여 피막이 형성된 에나멜선에 있어서 코로나 방전은 선간(피막과 피막 사이) 또는 피막과 절연체 사이에 발생하고, 하전된 입자들의 충돌에 의해 피막이 분해되고 발열되어 절연 파괴가 발생될 수 있다.Corona discharge means that an electric field is concentrated in a minute gap generated in an insulator such as an insulated wire or an insulated cable, and a weak discharge occurs. When such corona discharge occurs, insulation properties may be degraded and degradation may occur, resulting in dielectric breakdown. In particular, in an enameled wire formed by coating and curing a coil (or transformer) used in a motor or the like, specifically, an insulating paint on a conductor, a corona discharge occurs between the wire (between the film and the film) or between the film and the insulator. The collision of the particles may decompose the film and generate heat, resulting in dielectric breakdown.
최근에 에너지 절약을 위하여 인버터 모터 등을 구동시킨 시스템에서, 인버터 서지(inverter serge)에 의한 과전압이 코로나 방전을 일으키고, 이러한 코로나 방전에 의해 절연 파괴 현상이 일어나는 경우가 늘어나고 있다.In recent years, in a system in which an inverter motor or the like is driven for energy saving, overvoltage due to inverter serge causes corona discharge, and dielectric breakdown occurs due to such corona discharge.
이와 같은 코로나 방전을 억제하기 위하여, 수지 용액에 알루미나, 마그네시아, 실리카, 티타니아와 같은 무기 절연 입자가 분산된 절연체가 사용된 에나멜선이 제시되었다. 이와 같은 무기 절연 입자는 에나멜선에 코로나 방전을 억제할 뿐만 아니라, 열전도도의 향상, 열팽창의 감소, 에나멜선의 강도의 향상에 기여하는 것으로 알려져 있다.In order to suppress such a corona discharge, the enameled wire which used the insulator which the inorganic insulating particle, such as alumina, magnesia, silica, titania, was disperse | distributed to the resin solution was proposed. Such inorganic insulating particles are known not only to suppress corona discharge to enamel wires, but also to contribute to improvement of thermal conductivity, reduction of thermal expansion, and improvement of strength of enamel wires.
상기 무기 절연 입자를 내열성 수지에 분산시키는 방법으로서, 분말 형태의 무기 절연 입자를 수지 용액에 직접 첨가하는 방법이 알려져 있으나, 상기 무기 절연 입자가 수지 용액에 용해되지 않고 침강하여 용액 안정성이 좋지 못하다. 이러한 용액 안정성이 나쁜 수지 용액을 도체상에 도포 및 경화할 경우 절연 전선 제조 작업성이 좋지 못한 단점이 있다. As a method of dispersing the inorganic insulating particles in the heat resistant resin, a method of adding the inorganic insulating particles in a powder form directly to the resin solution is known, but the inorganic insulating particles are not dissolved in the resin solution and settle, resulting in poor solution stability. When the resin solution having such poor solution stability is applied and cured on the conductor, there is a disadvantage in that the workability of the insulated wire is poor.
이러한 단점을 극복하기 위하여 무기 절연 입자가 균일하게 분산된 졸(sol)을 수지 용액과 혼합하는 방법이 제시되었다. 이러한 방법은 무기 절연 입자가 분산된 졸과 수지 용액과의 혼합이 용이하고 분산성이 우수하여 제조된 절연 전선의 외관, 유연성 등이 우수한 장점이 있으나, 무기 절연 입자가 분산된 졸과 상용성이 좋은 수지 용액을 사용하여야 한다. In order to overcome this disadvantage, a method of mixing a sol in which inorganic insulating particles are uniformly dispersed with a resin solution has been proposed. This method has an advantage in that the sol in which the inorganic insulating particles are dispersed and the resin solution is easy to mix and has excellent dispersibility. Good resin solution should be used.
그런데, 절연 도료에 사용되는 대부분의 용매는 무기 절연 입자가 균일하게 분산된 졸을 제조하기 어려우며, 무기 절연 입자가 균일하게 분산될 수 있게 하는 용매는 수지 용액과의 친화성이 낮아 절연 도료에 응집물이 쉽게 발생하게 된다. 또한, 한정된 조건에서 상기 절연 도료의 무기 절연 입자의 분산성을 일시적으로 좋게 하더라도 절연 도료의 장기 보존성, 안정성, 재현성 등에 문제가 발생할 수 있다. However, most of the solvents used in the insulating paint are difficult to prepare a sol in which the inorganic insulating particles are uniformly dispersed, and the solvent which allows the inorganic insulating particles to be uniformly dispersed is low in affinity with the resin solution and aggregates in the insulating paint. This happens easily. In addition, even in a limited condition, even if the dispersibility of the inorganic insulating particles of the insulating paint is temporarily good, problems may occur such as long-term storage stability, stability, reproducibility, and the like.
상기 문제점을 해결하기 위하여 본 발명은 무기 절연 입자와 절연 수지의 상용성이 우수한 절연 도료 조성물을 제공하는 것이다.The present invention to solve the above problems is to provide an insulating coating composition excellent in compatibility between the inorganic insulating particles and the insulating resin.
상기 목적을 달성하기 위하여 본 발명은 졸 상태의 표면처리된 실리카와 폴리아미드이미드 수지를 포함하는 것을 특징으로 하는 내 코로나 방전성(corona discharge-resistant) 절연 도료 조성물을 제공한다.In order to achieve the above object, the present invention provides a corona discharge-resistant insulating coating composition comprising a surface treated silica and a polyamideimide resin in a sol state.
무기 절연 입자인 실리카가 균일하게 분산된 본 발명의 절연 도료 조성물을 이용하여 형성된 피막은 우수한 내코로나 방전성(corona discharge-resistant)을 가지므로 절연파괴 현상이 일어나지 않는다.Since the coating film formed by using the insulating coating composition of the present invention in which silica, which is an inorganic insulating particle, is uniformly dispersed, has excellent corona discharge-resistant, no dielectric breakdown phenomenon occurs.
도 1은 실시예 3에서 얻은 절연 도료 조성물을 도포하여 형성된 절연 피막의 SEM 사진이다.
도 2는 비교예 7에서 얻은 절연 도료 조성물을 도포하여 형성된 절연 피막의 SEM 사진이다.1 is an SEM photograph of an insulating coating formed by applying the insulating coating composition obtained in Example 3. FIG.
FIG. 2 is an SEM photograph of an insulation coating formed by applying the insulation coating composition obtained in Comparative Example 7. FIG.
이하, 본 발명을 자세히 설명한다. Hereinafter, the present invention will be described in detail.
본 발명의 내 코로나 방전성(corona discharge-resistant) 절연 도료 조성물은 졸 상태의 표면처리된 실리카와 폴리아미드이미드 수지를 포함한다. 종래의 내코로나 방전성 절연 도료 조성물에서 실리카 또는 실리카졸이 폴리아미드이미드 수지와의 상용성이 좋지 않은 것과 달리, 본 발명에서는 졸 상태의 표면처리된 실리카를 사용함으로써 폴리아미드이미드 수지와의 상용성을 향상시켰다.The corona discharge-resistant insulating coating composition of the present invention comprises a surface treated silica and polyamideimide resin in a sol state. Unlike silica or silica sol having poor compatibility with polyamideimide resin in the conventional corona discharge insulating coating composition, in the present invention, it is compatible with polyamideimide resin by using sol surface-treated silica. Improved.
상기 실리카는 아민, 에폭시, 티올, 카르복시산, 술폰산, 인산, 포스핀 및 시안산으로 구성된 군으로부터 선택된 1 종 이상으로 표면처리될 수 있다. 통상의 실리카는 그 표면에 히드록시기(-OH)를 가지기 때문에 비교적 소수성을 띠는 폴리아미드이미드 수지와 친화성이 떨어지는데, 본 발명에 따라 표면처리된 실리카는 표면에 화학적 결합이 가능한 작용기를 갖게 되어 폴리아미드이미드 수지와 공유 결합 또는 비공유 결합을 할 수 있어 폴리아미드이미드 수지와의 상용성이 향상된다.The silica may be surface treated with one or more selected from the group consisting of amine, epoxy, thiol, carboxylic acid, sulfonic acid, phosphoric acid, phosphine and cyanic acid. Since conventional silica has a hydroxyl group (-OH) on its surface, it is incompatible with a relatively hydrophobic polyamideimide resin, and according to the present invention, the surface-treated silica has a functional group capable of chemically bonding to the surface. Covalent bond or non-covalent bond can be performed with an amideimide resin, and compatibility with a polyamideimide resin improves.
상기 표면처리된 실리카는 본 발명에서 졸 상태로 사용되며, 표면처리된 실리카가 물, 알코올류, 케톤류, 에스테르류, 탄화수소 계열 등의 용매에서 콜로이드 상태를 이루고 있다. 이러한 콜로이드 상태를 형성하는 본 발명의 표면처리된 실리카는 5 내지 500 nm의 평균 입자 지름을 갖는다. 상기 평균 입자 지름이 5 nm 미만이면 실리카 입자의 표면 에너지와 응집력이 높아져 실리카 표면에 화학적 결합이 가능한 작용기가 균일하게 형성되기 어렵다. 또한, 상기 평균 입자 지름이 500 nm를 초과하면 코로나 방전으로 발생되는 하전 입자가 실리카 입자와 충돌하여 제조된 절연 피막이 열화될 수 있다.The surface-treated silica is used in the sol state in the present invention, the surface-treated silica forms a colloidal state in a solvent such as water, alcohols, ketones, esters, hydrocarbon series. The surface treated silica of the present invention forming this colloidal state has an average particle diameter of 5 to 500 nm. If the average particle diameter is less than 5 nm, the surface energy and cohesive force of the silica particles are increased, so that functional groups capable of chemical bonding on the silica surface are hardly formed uniformly. In addition, when the average particle diameter exceeds 500 nm, the insulating film produced by collision of the charged particles generated by corona discharge with the silica particles may be degraded.
상기 표면처리된 실리카로서, 3-아미노프로필트리메톡시실란, N-2-아미노에틸-3-아미노프로필트리메톡시실란, 3-글리시독시프로필트리메톡시실란, 3-머캡토프로필트리메톡시실란, 3-이소시아나토프로필트리메톡시실란, N-(베타-아미노에틸)감마-아미노프로필트리메톡시실란, N-(베타-아미노에틸)감마-아미노프로필메틸디메톡시실란, 감마-우레이도프로필트리메톡시실란 등을 단독으로 사용하거나 2종 이상 혼합하여 사용될 수 있다.As the surface-treated silica, 3-aminopropyltrimethoxysilane, N-2-aminoethyl-3-aminopropyltrimethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-mercaptopropyltrimeth Methoxysilane, 3-isocyanatopropyltrimethoxysilane, N- (beta-aminoethyl) gamma-aminopropyltrimethoxysilane, N- (beta-aminoethyl) gamma-aminopropylmethyldimethoxysilane, gamma- Ureidopropyltrimethoxysilane may be used alone or in combination of two or more thereof.
상기 졸 상태의 표면처리된 실리카는 절연 도료 조성물 100 중량부 대비 1 내지 40 중량부이며, 상기 졸 상태의 표면 처리된 실리카가 1 중량부 미만이면 내 코로나 방전성(corona discharge-resistant)의 효과를 충분히 얻을 수 없으며 50 중량부를 초과하면 실리카의 응집이 일어날 수 있다.The surface-treated silica in the sol state is 1 to 40 parts by weight based on 100 parts by weight of the insulating coating composition, and when the surface-treated silica in the sol state is less than 1 part by weight, the effect of corona discharge-resistant (corona discharge-resistant) is achieved. If not sufficiently obtained and exceeds 50 parts by weight, agglomeration of silica may occur.
또한 본 발명은 내 코로나 방전성(corona discharge-resistant)이 우수한 본 발명의 절연 도료 조성물을 도포하여 형성된 절연 피막을 포함하는 것을 특징으로 하는 절연 전선을 제공한다. 본 발명의 절연 전선은 폴리아미드이미드 수지에 실리카 입자가 균일하게 분산된 절연 도료 조성물을 사용하여 제조되어 외관 및 유연성이 뛰어나다.
In addition, the present invention provides an insulated wire comprising an insulating coating formed by applying the insulating coating composition of the present invention excellent in corona discharge-resistant. The insulated wire of the present invention is manufactured using an insulating coating composition in which silica particles are uniformly dispersed in a polyamideimide resin, which is excellent in appearance and flexibility.
[실시예][Example]
이하 실시예를 들어 본 발명을 더 구체적으로 설명한다. 본 발명이 속하는 분야의 평균적 기술자는 아래 실시예에 기재된 실시 태양 외에 여러 가지 다른 형태로 본 발명을 변경할 수 있으며, 이하 실시예는 본 발명을 예시할 따름이지 본 발명의 기술적 사상의 범위를 아래 실시예 범위로 한정하기 위한 의도라고 해석해서는 아니된다.
Hereinafter, the present invention will be described more specifically by way of examples. It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims and their equivalents. It should not be construed as an intention to limit the scope to example.
<실시예 1 내지 4 및 비교예 1 내지 8><Examples 1 to 4 and Comparative Examples 1 to 8>
하기 표 1과 같은 조성의 폴리아미드이미드 수지 200 g(불휘발분 25% 포함)와 졸 상태의 실리카를 알코올 용매에서 혼합하여 내 코로나 방전성(corona discharge-resistant) 절연 도료 조성물을 제조하였다. 이때, 실리카로서, 표면처리된 실리카(3-아미노프로필트리메톡시실란 사용)과 표면처리되지 않은 실리카(범용 실리카)를 사용하였다. 표 1에서 사용한 성분들의 단위는 중량부이다.Corona discharge-resistant insulating coating compositions were prepared by mixing 200 g of polyamideimide resin (including 25% of nonvolatile matter) and sol silica in an alcohol solvent. At this time, as the silica, surface-treated silica (using 3-aminopropyltrimethoxysilane) and untreated silica (general silica) were used. The units of components used in Table 1 are parts by weight.
Polyamideimide resin
실시예
Example
100
100
비교예
Comparative Example
100
100
물성 측정 및 평가Measurement and evaluation of physical properties
상기 실시예 1 내지 4 및 비교예 1 내지 8에 따르는 절연 도료 조성물을 제조하여, 투명도, 분산도 및 내코로나성을 시험한 결과를 아래 표 2에 정리하였다. 간략한 실험 조건은 다음과 같다.
The insulating paint compositions according to Examples 1 to 4 and Comparative Examples 1 to 8 were prepared, and the results of testing the transparency, dispersion, and corona resistance were summarized in Table 2 below. Brief experimental conditions are as follows.
(분산성 평가 1)(Variance evaluation 1)
절연 도료 조성물에 포함된 실리카의 분산성을 평가하기 위하여 상기 실시예 및 비교예의 절연 도료 조성물을 도포하여 뭉침 현상을 관찰하였다. 이와 함께, 일정한 도포 면적(200 ㎛2 단면적) 내에서 가장 큰 실리카 입자의 크기(nm)를 측정하여 기록하였다. 뭉침 현상이 발생하지 않고 실리카 입자가 작을수록 분산성이 우수한 것으로 본다.
In order to evaluate the dispersibility of the silica contained in the insulating coating composition, the coating composition of the insulating examples and the comparative example was applied to observe the aggregation phenomenon. Along with this, the size (nm) of the largest silica particles in a constant coating area (200 μm 2 cross-sectional area) was measured and recorded. Aggregation does not occur and the smaller the silica particles are considered to be excellent in dispersibility.
(분산성 평가 2)(Variance evaluation 2)
상기 실시예 3의 절연 도료 조성물을 도포하여 형성된 30 마이크로미터 두께의 절연 피막에 대해 SEM 사진을 찍어 도 1에 나타냈다. 이와 비교하기 위하여 상기 비교예 7의 절연 도료 조성물을 도포하여 형성된 30 마이크로미터 두께의 절연 피막에 대해서도 SEM 사진을 찍어서 도 2에 나타냈다.
The SEM photograph was taken about the 30 micrometer-thick insulating film formed by apply | coating the insulating coating composition of Example 3, and is shown in FIG. In order to compare with this, the SEM photograph was also shown in FIG. 2 about the 30 micrometer-thick insulating film formed by apply | coating the insulating coating composition of the said comparative example 7.
(내코로나성 평가)(Corrosion resistance evaluation)
절연 도료 조성물의 내코로나성을 평가하기 위하여 상기 실시예 및 비교예의 절연 도료 조성물을 0.9mm 지름의 구리 도체에 코팅한 후, 정현파(sine wave), 2000V, 10kHz, 실온의 조건에서 펄스 지속 시간(pulse endurance time)을 측정하여 기록하였다. 크랙이 발생하지 않고 펄스 지속 시간이 길수록 내코로나성이 우수한 것으로 본다.
In order to evaluate the corona resistance of the insulating coating composition, the insulating coating compositions of the examples and the comparative examples were coated on a 0.9 mm diameter copper conductor, and then pulse duration (sine wave, 2000 V, 10 kHz, and room temperature) was measured. pulse endurance time) was measured and recorded. The longer the pulse duration without cracking, the better the corona resistance.
(실리카 입자 (nm))Dispersion
(Silica particles (nm))
실시예
Example
비교예
Comparative Example
표 2에 정리한 바와 같이, 실시예 1 내지 4는 졸 상태의 표면처리된 실리카(3-아미노프로필트리메톡시실란 사용)을 사용함에 따라 분산도 및 내코로나성이 우수하였다. As summarized in Table 2, Examples 1 to 4 were excellent in dispersibility and corona resistance by using surface-treated silica (using 3-aminopropyltrimethoxysilane) in a sol state.
반면, 비교예 1은 졸 상태의 표면처리된 실리카를 사용하지 않음에 따라 내코로나성이 좋지 못하였다.On the other hand, Comparative Example 1 was not good corona resistance as it does not use the surface-treated silica in the sol state.
비교예 2는 본 발명에서 한정한 범위를 벗어난 과소한 함량의 졸 상태의 표면처리된 실리카를 사용함에 따라 내코로나성이 좋지 못하였다.Comparative Example 2 was not good corona resistance by using a surface-treated silica in the sol state of the content of the sol out of the range defined in the present invention.
비교예 3 및 4는 본 발명에서 한정한 범위를 벗어난 과도한 함량의 졸 상태의 표면처리된 실리카를 사용함에 따라 분산성과 내코로나성이 좋지 못하였다.Comparative Examples 3 and 4 were not good in dispersibility and corona resistance by using the surface-treated silica in the sol state of excessive content outside the range defined in the present invention.
비교예 5 내지 8은 본 발명의 범위를 벗어나, 졸 상태의 표면처리되지 않은 범용 실리카를 사용함에 따라 분산성과 내코로나성이 좋지 못하였다.Comparative Examples 5 to 8 were not good in dispersibility and corona resistance as outside the scope of the present invention, by using a general-purpose silica in the sol state untreated.
또한, 도 1 및 도 2의 SEM 사진으로부터, 본 발명의 실시예 3의 절연 도료 조성물에서는 실리카가 응집되지 않은 반면 비교예 7의 절연 도료 조성물에서는 실리카가 상당히 응집되었음을 알 수 있다.
In addition, from the SEM photographs of FIGS. 1 and 2, it can be seen that silica was not aggregated in the insulating coating composition of Example 3 of the present invention, whereas silica was considerably aggregated in the insulating coating composition of Comparative Example 7.
위와 같이 본 발명의 최적 실시예들을 개시하였다. 본 실시예를 포함하는 명세서에서 특정한 용어들이 사용되었으나, 이는 단지 당업자에게 본 발명을 상세히 설명하기 위한 목적에서 사용된 것이지 의미를 한정하거나 특허청구범위에 기재된 본 발명의 범위를 제한하기 위해 사용된 것이 아님을 밝혀 둔다.
As described above, optimal embodiments of the present invention have been disclosed. Although specific terms have been used in the specification including the present embodiment, it is only used for the purpose of describing the present invention to those skilled in the art in detail and used to limit the meaning or limit the scope of the present invention described in the claims. Make it clear.
Claims (5)
상기 표면처리된 실리카는 아민, 에폭시, 티올, 카르복시산, 술폰산, 인산, 포스핀 및 시안산으로 구성된 군으로부터 선택된 1 종 이상으로 표면처리된 실리카인 것을 특징으로 하는 내 코로나 방전성(corona discharge-resistant) 절연 도료 조성물.The method of claim 1,
The surface-treated silica is corona discharge-resistant, characterized in that the silica surface-treated with at least one selected from the group consisting of amine, epoxy, thiol, carboxylic acid, sulfonic acid, phosphoric acid, phosphine and cyanic acid. A) insulating coating composition.
상기 표면처리된 실리카는 3-아미노프로필트리메톡시실란, N-2-아미노에틸-3-아미노프로필트리메톡시실란, 3-글리시독시프로필트리메톡시실란, 3-머캡토프로필트리메톡시실란, 3-이소시아나토프로필트리메톡시실란, N-(베타-아미노에틸)감마-아미노프로필트리메톡시실란, N-(베타-아미노에틸)감마-아미노프로필메틸디메톡시실란, 감마-우레이도프로필트리메톡시실란으로 구성된 군으로부터 선택된 1 종 이상인 것을 특징으로 하는 내 코로나 방전성(corona discharge-resistant) 절연 도료 조성물.The method of claim 2,
The surface-treated silica is 3-aminopropyltrimethoxysilane, N-2-aminoethyl-3-aminopropyltrimethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-mercaptopropyltrimethoxy Silane, 3-isocyanatopropyltrimethoxysilane, N- (beta-aminoethyl) gamma-aminopropyltrimethoxysilane, N- (beta-aminoethyl) gamma-aminopropylmethyldimethoxysilane, gamma-urea A corona discharge-resistant insulating coating composition, characterized in that at least one member selected from the group consisting of idopropyltrimethoxysilane.
상기 졸 상태의 표면처리된 실리카는 절연 도료 조성물 100 중량부 대비 1 내지 40 중량부인 것을 특징으로 하는 내 코로나 방전성(corona discharge-resistant) 절연 도료 조성물.The method of claim 1,
The surface-treated silica in the sol state is 1 to 40 parts by weight based on 100 parts by weight of the insulating coating composition corona discharge-resistant (corona discharge-resistant) insulating coating composition.
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| KR1020110029650A KR20120111256A (en) | 2011-03-31 | 2011-03-31 | Corona discharge-resistant insulating varnish composition comprising surface-treated silica and insulated wire containing insulated layer coated with the same |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103497616A (en) * | 2013-08-29 | 2014-01-08 | 哈尔滨电机厂有限责任公司 | Preparation method of two-component corona-proof high-resistance paint |
| KR20170037227A (en) * | 2015-09-25 | 2017-04-04 | 한국전기연구원 | Insulating coatings with improved abrasion resistance, adhesiveness, heat resistance and corrosion resistance |
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2011
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103497616A (en) * | 2013-08-29 | 2014-01-08 | 哈尔滨电机厂有限责任公司 | Preparation method of two-component corona-proof high-resistance paint |
| KR20170037227A (en) * | 2015-09-25 | 2017-04-04 | 한국전기연구원 | Insulating coatings with improved abrasion resistance, adhesiveness, heat resistance and corrosion resistance |
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